Our first precise information is contained in a Deed of Mutual Covenants dated October 1, 1863, and made between the Rhosydd Slate Co. Ltd. and H. B. Roberts, whereby the latter granted the company a wayleave under which it constructed a railway and incline from its property to the Croesor Tramway. The original wayleave was 2d. a ton, […].
Source: wiktionary